kjorstad



Feb. 3, 1931. E.'A. H. KJORSTAD 5 AHARATUS FOR THE PREPARATION OF COOLING BRINE Filed Nov. 18. 1927 2 Sheets-Sheet 1 Feb. 3, 1931. E. A. H. KJORSTAD 1,791,032

APPARATUS FOR THE PREPARATION OF COOLING BRINE Filed Nov. 18. 1927 2 Sheets-Sheet 2 .1 Nv EN ToR. Erik Am inn #a//9r/'rn 4'75 fad BY. 64;,

A 'r ToRN 2Y3 ERIK ABNFINN HA LLeRIM xl'ronsran, or LAROCHELLE, Fenian APPARArUs' ron THE PREPARATION OF cdoLING mam Application filed November 18,1927"; serial The present invention relates to an apparatus for the preparation of a cooling brine by the use of ice and salt, said apparatus being chiefly adapted for use upon trawlers and like ships and mor'e' generally, upon allvehicles used for transporting food and other goods that is in all cases wherein the operative conditions differ from those of the usual stationary plants.

The known apparatus for the preparation of a cooling brine by the use of ice and salt is generally designed-in such manner-as to be mounted uponsubstantially stationary supports; but such apparatus are not adapted to be used upon vessels, which are constantly subjected to pitching and rolling and like movements. In the usual apparatus,

the liquid is free to 'oscillate and to follow up all such movements, thus resulting in the format-ion of foam due to the motion ofthe liquid producing eddies, the 1 brine falling down or splashing in the air. Furthermore, the supply or the discharge of'the liquid may be interrupted when the vessel is inclined on one side; the liquidthe'n assumesa considerable kinetic'energy' when the vessel incllnes onthe other side, thus striking the'walls of the apparatus and producing" foam;

The apparatus according to the'presen't invention is of the type in which thecooling liquid flows-through amass of ice in suspension or floatingin'the liquid; said iceis maintained within the receptacle preferably by means'of one or more grates at the bot tom and a brine distributor or feeding'de vice placed at the top;'the liquid enters the column or mass of ice at one or more points, preferably situated below the upper'level'of the ice column. 7

7 An important feature of the apparatus consists i'nthat the ice column is'surrounded with a partitioned receptacle adapted to con-'- No. 234,16', and in Fiance rembr 1, 1926;

Fig-. 5 is a plan 'view'showing the vari'ous pa'rtsof the lower grate".

Theapparatusshown'in the drawings'com prisesan internal receptacle A, adapted tb* contain ice, and provided at the bottornwith K troduction ofice', said hopper havinga'a *number Of*iIl'lt- OIlfiCBS*D for the'liquidl ThereceptacleA is fitted within 'a'rsecond' recipient? E- located itself within an outer receptacle-Fl Between the f wallsof the rec'eptacles A and F, and at a suitable height isarrangedapar tit-ion l which is preferably'horizontal. The

iceis loaded through the hopper-G, care being:

- takenth'atthelevlofthe iceis-always above the" level of the liquid the latter is supplied: through the' tube-G 'into'the 'spaceH between the said-hopper and"the'-recipient-:F. The space H preferably contains a suitable amount of salti The liquid supplied through the'tube' G rises to the level ofthe orificesD'and'passes" through the'latterinto'the said hopper and the' receptacle Awhich, as above stated, are filled with broken-ice to thelevelofthe upper part o'fthe said hopper; In this manner,

the liquid; the ice-and'the salt ar'e intimately mixed, and the formation of foam,' -which' otherwise occurs'whe'n the'ic'e, which must be constantly added to replace the meltedice," I

receptacle E, rthence above the upper edge of 1 a grate B- (or several" superposed grates),

he recipient E, and enters the recipient F, at the lower part whereof the cooling liquid is withdrawn through a discharge tube K. The said cooling liquid may also be discharged through a further tube L mounted close to the outlet of the grate B.

A considerable advantage ailorded by the apparatus above described consists in the fact that the cooling liquid will circulate in a continuous manner irrespectively of the position or of the movements of the vessel at sea. I thus obviate. the liquid falling or splashing in the air, so that no team will be formed; I further obviate the irregular operation and accidental interruptions of the apparatus due to the provision of a large mass of liquid contained in the receptacles E and F and serving to compensate for the variations in the rate of flow of the liquid discharged trom the grate B. Furthermore, since the chamber E is constantly filled with liquid, the grate B will always be submerged. Finally the mass of liquid in the receptacles E and F, which serves to compensate for the variations in the rate oil flow of the brine and to maintain the orifice K constantly under a static head, will not be subjected to oscillations or willbe subjected to oscillations of very small amplitude, due to the balile disposition provided by the several recipients. In this manner, the differences oi level due to the motion of the vessel and to the kinetic energy of the liquid in motion will be considerably reduced.

The liquid contained in the space H is always able to proceed into the hopper through one or more of the orifices in the row I), or, otherwise stated, a certain number of orifices of the set of orifices D will be passed through by the brine whereby the liquid will constantly circulate irrespectively of the inclination of the vessel.

The grates at the bottom and the distributer or feeding device at the top are so disposed that the liquid will flow downwardly and from the outside to inside,'through the mass of ice; these conditions are found to be highly desirable for the proper operation of the apparatus.

The grates placed below the ice are arranged so that the cooling liquid will be uniformly distributed throughout the whole mass of the ice. For this purpose, the said grates preferably consist of a set of plates Ml\ll -l\ll which are apert-ured at the centre; said plates are superposed and spaced apart by bars or slabs affording tree passage to the brine. The size of the said plates may decrease from bottom totop, and the upper plate M need not be apertured at the centre. I may obviously employ any other known type of grates for this purpose.

Instead of introducing the salt to be dissolved into the liquid through the space H, I

5 may saturate the cooling liquid by circulating the same through a separate receptacle, conduit, trough or the like containing salt, or by introducing the proper amount of a saturated salt solution into the brine. Some or all of the aforesaid means may also be combined.

Should the out-put of the apparatus exceed the normal rate of consumption, so as to keep the level of the liquid below a predetermined level, an overflow device may be required. Such an overflow P may be mounted at the top of the outer recipient, as shown in Fig. 1.

Obviously, the plant may be composed of a plurality of similar apparatus disposed in series or in parallel arrangement. When in series, the several apparatus are disposed in such manner that the static head due to the difference of levels in the successive apparatus, will cause the circulation of the liquid from one apparatus to the next.

The said invention is not limited to the constructional details herein specified. The number of receptacles may be greater than three. Their walls will always form a set or" baffles so as to divide the mass of liquid in the proper manner. The distributer or like device for feeding the brine at the top and the grates disposed at the bottom may be of any other type, and for example the liquid supply orifices may consist of a grate of cylindrical, conical or any other shape.

Having now described my invention what I claim as new and desire to secure by Letters Patent is:

1. In an apparatus for the preparation of a cooling brine comprising an ice column adapted to be passed through by a salt solution, a receptacle in communication with and surrounding said ice column and adapted to contain a mass of brine, substantially vertical partition walls and a substantially horizontal partition wall in said receptacle, and means for withdrawing brine from said receptacle.

2. In an apparatus for the preparation of a cooling brine comprising an ice'eolumn adapted to be passed through by a salt solution, a number of receptacles in communication with and surrounding said ice column and fitted within one another, said receptacles being adapted to contain brine, means for withdrawing brine from said receptacles and a hopper for the ice at the upper part of the innermost receptacle.

8. An apparatus as claimed in claim 2 wherein said hopper has a row of inlet orifices for the brine.

at. In an apparatus for the preparation of a cooling brine comprising an ice column adapted to be passed through by a salt solution, a receptacle in communication with and surrounding said ice column and adapted to contain a mass of brine, substantially ver tical partition walls and a substantially horizontal partition wall in said receptacle, means for supplying the salt solution into the ice column above said horizontal wall and means for discharging the brine from said receptacle below said horizontal wall.

5. In an apparatus for the preparation of a cooling brine comprising an ice column adapted to be passed throughby a salt solution, a number of receptacles in communication with and surrounding said ice column and fitted within one another, said receptacles being adapted to contain brine, means for withdrawing brine from said receptacles and means for discharging the brine at the lower part of the outer receptacle.

6. In an apparatus as claimed in claim 5, further means for discharging the brine at the lower part of the innermost receptacle, below the ice column.

7. In an apparatus as claimed in claim 1, the provision of an overflow pipe immediately below said horizontal wall.

In testimony whereof I have signed my name to this specification. 1

ERIK ARNFINN HALLGRIM KJtlRSTAD. 

